Don't you like the default wings? Are they too boxy? Is building wings with fuselage blocks annoying? So here are 4 different custom airfoils with control surfaces and realistic physics for you! They consist of wing sections and contain fuel.

The wing sections are connected to each other but aren't connected to the fuselage block, so you can easily make them subassemblies and put on your planes! If you need longer wings, simply make the wing sections longer or add more of the wings. Feel free to upload planes you built with these, just mention me.

Airfoils top to bottom: Cambered, Symmetric, Semi-symmetric and Flat bottom.

I can explain which airfoil is right for which planes for you to decide which one to put on your plane.
So, let's start from symmetric (2nd from top). It doesn't produce lift at 0 angle of attack, but also creates very little drag. These are ideal for aerobatic and racing planes, as well as high-speed fighters.
Semi-symmetric (3rd from top) has the best lift/drag ratio. That's why it's used on lots of planes, especially airliners.
Flat bottom airfoil (bottom) produces more lift, but also more drag. These are good for planes that don't need to fly very fast.
Cambered airfoil (top) creates the most lift, but also the most drag. These are the best for heavy and slow-flying models. Also, I didn't put a control surface on this one because cambered airfoil with a control surface is very unstable. If you need a control surface, place another airfoil on it.

Demonstration plane here: https://www.simpleplanes.com/a/lwBMWp/Custom-Airfoils-Demonstration-Plane

Have fun!